PRO2A 16" 350 Legend Mid Length NR Side Charging M-LOK Upper Receiver | Pro2A Tactical

PRO2A 16" 350 Legend 1/16 Carbine Length Melonite NR Side Charging M-LOK AR-15 Upper Receiver

Product Overview

The PRO2A 16" 350 Legend 1/16 Carbine Length Melonite NR Side Charging M-LOK AR-15 Upper Receiver delivers superior ergonomic operation and rugged reliability in a premium, barreled upper configuration. Chambered explicitly to maximize the velocity and energy profiles of the popular straight-walled .350 Legend cartridge, this advanced assembly replaces the traditional mil-spec rear charging handle layout with a high-performance Non-Reciprocating (NR) Left-Side Charging Upper Receiver system. Featuring a premium 16-inch 4150 CMV heavy-profile barrel and an anodized free-floating aluminum rail, the entire optics-ready system arrives meticulously timed, aligned, and torque-verified for immediate deployment in straight-wall restricted hunting territories.

Key Features

Non-Reciprocating Side Charging (NRSC) Handle: Upgrades manual handling by keeping the left-side charging handle stationed forward while firing—preventing moving part interference with support rests while allowing quick left-side cycling without breaking your cheek weld.
Drop-In Straight-Wall Solution: Instantly converts any standard mil-spec AR-15 lower into a legal, medium-game hunting rifle optimized for straight-wall compliance zones without requiring specialized lower components.
Precision 1/16 Twist Rate: Engineered specifically to stabilize the complete spectrum of standard .357-caliber hunting loads and heavy target projectiles cleanly.
Reliable Carbine Gas Impingement: Standard low-profile 0.750" gas block and carbine length gas loop properly manage straight-wall pressure curves for soft, uniform extraction strings.
Inside-Out QPQ Melonite Protection: Liquid salt-bath nitride surface treatment shields internal rifling lines from gas erosion while forming an impenetrable layer against harsh environmental moisture.
Slim Free-Float M-LOK Rail: Isolates structural barrel harmonic variables to guarantee strict sub-MOA precision while expanding continuous top Picatinny rail realignment and modular side mounting slots.

Technical Specifications

Charging System Orientation	Left-Side Non-Reciprocating (NR) Side-Charging Upper Assembly; Forward Handle Remains Stationary While Firing
Upper Receiver	Gibbz Arms G4 Billet Aluminum Side Charging Receiver, Gen 2 Handle, Type III Hardcoat Anodized Matte Black Finish
Barrel Length & Contour	16 Inches; Medium Profile Contour Axis
Barrel Material Composition	4150 Chrome Moly Vanadium (CMV) Steel
Twist Rate	1:16 Twist (Optimized for straight-wall hunting loads)
Barrel Coating Treatment	QPQ Melonite / Liquid Salt Bath Nitride Interior Bore and Exterior Shielding for Extreme Wear and Corrosive Resistance
Gas Impingement Setup	Carbine-Length Gas System with 0.750" Low Profile Gas Block, Stainless Steel Gas Tube Layout
Muzzle Thread & Device	5/8-24 TPI A2 Flash Hider
Handguard Rails Profile	12 Inch Slim Profile Free-Float Aluminum Handguard, Integrated Top Picatinny Rail Alignment, Matrixed M-LOK Structural Slots
Manufacturing Origin & Quality	100% Proudly Assembled, Timed, and Quality Checked in the USA with Pro2A Tactical Lifetime Factory Warranty

Why Choose the PRO2A Non-Reciprocating Side-Charging 350 Legend Upper?

Harnessing the flat trajectories and heavy punch of the .350 Legend cartridge inside a modern sporting rifle requires expert component pairing to prevent feeding jams or premature cycling wear. Standard rifle receivers force the hunter to disrupt their sight picture and battle heavy recoil springs blindly underneath an optic mount. The Pro2A Non-Reciprocating Side-Charging system rewrites this manual of arms entirely. By moving the cycle layout to a left-side ergonomic handle, you can clear actions or load heavy rounds intuitively while keeping your eyes completely downrange, overcoming the awkward clearance issues of large hunting scopes and standard charging latches. Paired with our premium 4150 CMV heavy barrels button-rifled at a tight 1/16 twist, this barreled upper eliminates external barrel distortion and severe cyclic gas shock. Skip the technical assembly tools and upgrade your platform with a duty-ready hunting asset you can trust right out of the box.

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